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UC3851 Datasheet Pwm Controller

Manufacturer: UNITRODE

Overview: Programmable, Off-Line, PWM Controller UC1851 UC2851 UC3851.

Datasheet Details

Part number UC3851
Manufacturer UNITRODE
File Size 766.22 KB
Description PWM Controller
Datasheet UC3851-UNITRODE.pdf

General Description

The UC1851 family of PWM controllers are optimized for offline primary side control.

These devices include a high current totem pole output stage and a toggle flip-flop for absolute 50% duty cycle limiting.

In all other respects this line of controllers is pin for pin compatible with the UC1841 series.

Key Features

  • All Control, Driving, Monitoring, and Protection Functions Included.
  • Low-Current Off Line Start Circuit.
  • Voltage Feed Forward or Current Mode Control.
  • High Current Totem Pole Output.
  • 50% Absolute Max Duty Cycle.
  • PWM Latch for Single Pulse Per Period.
  • Pulse-by-Pulse Current Limiting plus Shutdown for Over-Current Fault.
  • No Start-Up or Shutdown Transients.
  • Slow Turn-On Both Initially and After Fault Shutdown.

More Datasheets from UNITRODE

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UC3851 Distributor